Wheel for railway, tramway, and other vehicles, &amp;c.



No. 795,683. PATE-NTED JULY 25, 1905.

S. G. BOARD.

l WHEEL POR RAILWAY, TRAMWAY, AND OTHER VEHICLES, &o.

APPLIOATIQN FILED MAY 24, 1904.

ZSHEBTS-SHBBT 1.

WITNESSES. L INVENT'OR.

M@ di?? No. 795,683. n PATENIED JULY 25, 1905. S. G. BOARD. WHEEL PORRAILWAY, TRAMWAY, AND OTHER VEHICLES,l 8m.

APPLICATION FILED MAY 24, 1904.

2 SHEETS-SHEET 2.

"WITNESSES NVENTOR. @f-

UNITED STATES PATENT OFFICE.

SAMUEL GEORGE BOARD, OF MANCHESTER, ENGLAND.

WHEEL FOR RAILWAY, TRANIWAY, AND OTHER VEHICLES, &G.

Specification of Letters Patent.

Patented July 2'5, 1905.

Application filed May 24, 1904;. Serial No. 209,601.

T0 all whom, it may concern:

Be it known that I, SAMUEL GEORGE BOARD, a British subject, and aresident of Manchester, in the county of Lancaster, England, haveinvented certain new and useful Improvements in Wheels for Railway,Tramway, and other Vehicles and in Wheels or Pulleys for other Purposes,of which the following is a specification. A

It has hitherto been the practice to prepare disks or centers of Wheelsof wood or of a pulp or of a compound or prepared material and upon thedisks so formed to shrink the tires or rims and iitin the hubs. It hasalso been proposed to secure the rims on such disks by anged platesshrunk into grooves in the rim and also to fill a prepared material in asoft dry state into the rim and subject it to impact from numerous blowsof a steam-hammer until the requisite degree of solidity and strengthhas been produced. It isnow found, however, that a much better wheelstructure can be obtained, together with economy in manufacture, from amixture or compound ofwood sawdust, magnesium oxid, magnesium chlorid,or hydrochlorid acid, and farina or other ingredients by compressing thematerial While in a soft, plastic, and moist condition direct into therim or tire and upon the hub or center by a dead hydraulic pressureexerted equally over the entire surface thereof.

The invention will be fully described with reference to the accompanyingdrawings.

Figure l is a side elevation of railway-wheel constructed in accordancewith the invention; Fig. 2, a sectional elevation of same; Fig. 3, aperspective view of plate for molding same.

The rim or tire A for the Wheel and the hub B are first constructed inthe ordinary way as for disk wheels. A die-plate D is also constructedto accurately t the interior of the tire with a number of projectingstuds d, each of which corresponds to a bolt-hole to be formed in theWheel center for the hub-fiange Z2 and the rim-plates a. A seconddie-plate is fitted over the plate D, with holes through which the studs0l project.

The hub B is placed in the center of the die-plate D and the tire or rimA around it upon a suitable bed plate or block. The prepared material ina soft, plastic, and moist condition is filled into the interior of therim or tire A upon the die-plate D, between the tire and the hub, andthe second plate placed on top. On the ends of the studs d, projectingthrough the second plate,nu ts are screwed.

The die-plate D, with the hub and tire, are placed in a suitablehydraulic or other press, and the prepared material is compressed at adead pressure of, say, about two tons per square inch into the spacebetween the interior of the tire and the hub, the pressure being appliedequally over the entire surface. When the material is compressed andbefore the pressure is relieved, the nuts are screwed down upon thesecond plate, so that when compressed to the desired extent the materialis prevented expanding after the pressure is relieved and while it isdrying. After compression the wheel is removed from the press and thematerial dried before removing the die-plates.

Ferrules or tubes are preferably placed upon the studs d to form thebolt-holes, so that there may be no diiculty in removing the die-plate Dand studs d after compresslon.

Should it be considered necessary in order to prevent anyk slippingbetween the rim or tire or hub and the center material, indentations orprojections may be formed thereon into or around which the material willbe compressed.

The center may be compressed within the tire without being compressedaround a metal gub, either solid or with a hole to receive a The tire orrim and the hub may be joined by bars or spokes over or around which theplastic material may be compressed, which would eifectually prevent anydisplacement of the parts relatively to one another.

For common road-vehicles or other wheels with spokes the mold or die-boxis made of a shape to mold the hub-fellies and spokes inside a rim ortire either with or without a metal bush inserted or joined for the axleof the wheel, or a disk may be molded between the hub and felly insteadof the spokes. Any other form of wheel with a metal rim or tire may bemade in the same way, molded or compressed within the tire, and may beemployed for wheels or pulleys for other purposes than Vehicles.

What I claim as my invention, and desire to protect by Letters Patent,is*

1. In a wheel applicable for railway and other vehiclesa composition ofsawdust, magnesium oxid, and magnesium chlorid a tire and a central hubinto and around Which the composition is, while in a soft` moist andplastic state, compressed and held therein under a dead hydraulicpressure over the whole surface until it dries and sets substantially asdescribed.

2. A wheel comprising in its construction a tire, a hub and a disk ofsoft plastic material of sawdust, magnesium oxid, and magnesium chloridcompressed while in a soft plastic and moist state into the tire andaround the hub and maintained therein under a dead hy p and a hub of acomposition of sawdust, magnesium oxid, and magnesium chlorid,compressed while in a soft plastic and moist state into the tire andaround the hub and maintained therein under a dead hydraulicpreswitnesses.

sure equal over its entire surface until set dry and hard substantiallyas described. 5. A wheel comprising in its construction a preparedmaterial forced and compressed while in a soft moist plastic conditioninto the space around the hub and between it and the tire by a deadhydraulic pressure equal over its entire area in combination with thesaid hub and tire substantially as described.

6. Awheel comprising in its construction a prepared material of sawdustmagnesium oxid and a binding material Jforced and compressed whilestil-l in asoi't plastic moist condition around the hub and into thespace between it and the tire and maintained therein under a deadhydraulic pressure equal over its entire area until set in combinationwith the said hub and tire substantially as described.

In witness whereof I have hereunto signed my name in the presence of twosubscribing SAMUEL GEORGE BOARD Witnesses:

J. OWDEN OBRIEN,

T. W. ANDREW.

